Speed control device for reeling apparatus



Feb. 11, l1. s. WATANABE 2,231,145

SPEED CONTROL DEVICE FOR REELING APPARATUS Filed July 8, 1939 F "T [H 580 J2 II I] I 1 INVENTOI; \S. w g

A TTORNEY-S Patented Feb. 11, 1941 PATENT GFFKQE SPEED CONTROL DEVICEFOR REELING APPARATUS Shinnosuke Watanabe, Kyoto-'shi, Japan ApplicationJuly 8, 1939, Serial No. 283,509 In Japan March 21, 1939 1 Claim.

This invention relates to speed control devices for reeling apparatus.

For example, on unknitting a knitted fabric comprising two or more yarnsor threads of unequal length interknitted therein, it is desirable tohave reels or bobbins revolving on a common shaft at unequal speedscorresponding to those at which the yarns or threads have to be drawnout from the fabric due to their unequal length interknitted therein,and in some case it is desirable that one of the reels of bobbins forthe yarn or thread ceased to be drawn out from the fabric for a certaininstant does not'have a revolving movement on the shaft, while the otherreels or bobbins for the yarns or threads which are continuing to bedrawn out from the fabric are revolving on the shaft. For this purpose,it is desirable to movably mount the reels or bobbins on a commonrevolving shaft in such manner that the reels or bobbins may be drivenby the shaft through the friction between the reels or bobbins and theshaft carrying them to exert on the yarns or threads a force suflicientto unknit the fabric and take up the unknitted yarns or threads but toallow the reels or bobbins to slip on the shaft to prevent the breakageof the yarns or threads when the yarns or threads are forciblytensioned.

The object of the invention is to provide a device for individually andindependently controlling the speed of a number of the reels or bobbinsmounted on a common revolving shaft.

The invention will be better understood from the following descriptiontaken in connection with the accompanying drawing, in which:

Fig. 1 illustrates the application of speed control devices according tothe invention;

Fig. 2 is a side elevational view of a speed control device embodyingthe invention;

Fig. 3 is a horizontal sectional view of the speed control device shownin Fig. 2;

Fig. 4 is a side elevational view of a modified form of the speedcontrol device; and

Fig. 5 is a side elevational view of a further modification.

Referring to the drawing, l represents a tubular member having a flange2 at one end adapted to be movably mounted on a revolving shaft 3 andsecured thereon by means of a set screw 5 passing through a threadedhole 4 in the flange. Another threaded tubular member 6 having a flange1 at one end and provided with a longitudinal slot 8 is connected withthe tubular member l by means of the slot and a pin 9 provided on thetubular member I to engage in the slot. An adjusting spring bearingcollar I is screwed over the thread on the tubular member 6, and aspiral spring ll surrounding the tubular members between the flanges 4and I0 is arranged so as to be adjusted by means of the collar Ill.

As seen in Fig. 1, a number of reels l2 are movably mounted on a commonrevolving shaft 3, and each of them is held in position by means of astop collar [3 mounted on the shaft and secured thereto by any suitablemeans, such as a set screw l4, and the speed control device according tothe invention is mounted on the shaft and secured thereto by means ofthe set screw with the flange l in contact with one end of the reel, thespring H being adjusted as desired by means of the collar It). With thisarrangement, if the spring is adjusted as desired differently forrespective reels, it will be seen that the respective reels will berotated on the common shaft 3 at respective speed different inaccordance with the different adjustments of springs when the commonshaft is rotated at a speed, due to different frictions between the reeland the shaft 3, and the flange 1 and the corresponding end of the reel,and under unduly excessive tension of the reeled yarn or thread the reelwill be allowed to slip on the shaft, thereby the breakage of the yarnor thread being avoided.

In the modification shown in Fig. 4, the tubular member 6 and theadjusting spring bearing collar Ill are omitted, and one end of thespring is secured on one side of the flange 2 by suitable means, such aswelding, the other end being abutted against one end of the reel.

In the further modification shown in Fig. 5, the tubular member 6 andthe adjusting spring bearing collar l0 are omitted and the spring 15 isarranged outside the tubular member I, instead of surrounding it, oneend being secured on the flange 2 by suitable means, such as welding andthe other end being bent to a ring form as shown at l5 and mounted onthe shaft 3.

I claim:

A speed control device for reeling apparatus comprising a tubular memberhaving a flange at one end and a pin near the other end adapted to bemounted and secured by means of a set screw .on a revolving shaft,another threaded tubular member having a flange at one end and providedwith a longitudinal slot engaging the said pin adapted to be connectedwith the first mentioned tubular member by means of the pin and slotconnection, an adjusting spring bearing collar screwed over the threadon the second mentioned tubular member and a spiral spring encirclingthe connected tubular members between the first mentioned flange andsaid collar, the pin being visible in the slot and indicating the degreeof compression of said spring,

SHINNOSUKE WATAN-ABE.

